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* [PATCH 0/2] iter revert problems
@ 2021-08-09 11:52 Pavel Begunkov
  2021-08-09 11:52 ` [PATCH 1/2] iov_iter: mark truncated iters Pavel Begunkov
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: Pavel Begunkov @ 2021-08-09 11:52 UTC (permalink / raw)
  To: Alexander Viro, linux-fsdevel, Jens Axboe, io-uring
  Cc: linux-kernel, asml.silence

For the bug description see 2/2. As mentioned there the current problems
is because of generic_write_checks(), but there was also a similar case
fixed in 5.12, which should have been triggerable by normal
write(2)/read(2) and others.

It may be better to enforce reexpands as a long term solution, but for
now this patchset is quickier and easier to backport.

Pavel Begunkov (2):
  iov_iter: mark truncated iters
  io_uring: don't retry with truncated iter

 fs/io_uring.c       | 6 ++++++
 include/linux/uio.h | 5 ++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

-- 
2.32.0


^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2021-08-10  8:47 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-09 11:52 [PATCH 0/2] iter revert problems Pavel Begunkov
2021-08-09 11:52 ` [PATCH 1/2] iov_iter: mark truncated iters Pavel Begunkov
2021-08-09 11:52 ` [PATCH 2/2] io_uring: don't retry with truncated iter Pavel Begunkov
2021-08-09 15:52 ` [PATCH 0/2] iter revert problems Al Viro
2021-08-09 18:56   ` Pavel Begunkov
2021-08-10  8:47   ` David Laight

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